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Il testo tratta della storia "parallela" dei tre Arsenali: quello di Venezia, di La Spezia e di Taranto.

Il testo tratta della storia "parallela" dei tre Arsenali: quello di Venezia, di La Spezia e di Taranto

The identification of the precise position of persons and objects all around the world has become a key element for the optimisation of many economic and private activities, including commercial transport, the synchronisation of communication links and agriculture, tourism and the strengthening of safety standards both for people and goods. The Global Navigation Satellite System (G.N.S.S.) has become well known since its first exploitation by the United States of America and its Global Positioning System (G.P.S.) which made use of satellite-based information for military purposes.1 The technical and operational development of G.N.S.S. has stepped well beyond the initial military scope of application, so much so that to-day, we can envisage a multitude of possible civil uses for this technology, particularly with reference to the transport industry. However, a question concerning the legal issues related to the present and future deployment of this infrastructure must now be faced.2

In questo breve contributo ci si propone di tracciare un quadro delle norme di diritto internazionale privato, intese in senso lato, vigenti nell’Unione europea in relazione ai contratti che riguardano gli strumenti finanziari e la prestazione di servizi finanziari nei confronti dei consumatori. In tale prospettiva, particolare attenzione viene prestata alla nozione di "consumatore" nel diritto dell’Unione europea e nella giurisprudenza della Corte di giustizia nonche al coordinamento dello strumento internazional- privatistico con le direttive di tutela sostanziale dei consumatori.

Pure and PO 4 -doped aluminas (≍ 3% P 2 O 5 ), pretreated at three different temperatures (773, 1273, and 1473 K), have been compared by XRD, TEM, and FTIR spectroscopy. The addition of phosphates does not modify the phase transition of low-temperature spinel aluminas (γ-Al 2 O 3 ) to high-temperature spinel aluminas (δ, θ-Al 2 O 3 ), and delays somewhat the phase transition from spinel alumina to the corundum phase (α-Al 2 O 3 ). Phosphates have a positive effect on surface area and porosity only for the corundum phase obtained at T ≥ 1450 K, in which the particles morphology is modified with respect to pure (α-Al 2 O 3 ). The effect of PO 4 -doping is appreciable on surface basicity and acidity. The weak basicity of alumina is gradually eliminated, with increasing firing temperature. The presence of phosphates increases the strong surface acidity of aluminas: phosphates tend to collect preferably on the flat patches of regular crystal planes, and so doing decrease the amount and increase the strength of the Lewis acid sites (coordinatively unsaturated (cus) Al IV ions) present on the regular crystal planes. Meanwhile, the presence of phosphates produces an appreciable increase of the number of strong cus Al IV Lewis acid sites present in crystallographically and/or coordinatively defective configurations. When the bulk transition to α-Al 2 O 3 has occurred in systems treated at T ≥ 1400 K, the samples retain surface properties reminiscent of those of the transition alumina phases. The diverse opinion of investigators that phosphates act toward alumina as phase stabilizing needs some corrections and additions: the positive role of phosphates on the alumina support implies the stabilization of higher amounts of the strong Lewis acid sites that are most likely to be important in catalytic applications.

Ce mémoire aborde le thème de l'avenir de l'AMP dans le cadre de la profession de sage-femme. La physiologie est notre domaine. Mais alors, que penser du fait que nous soyons désormais habilités à concourir aux activités d'AMP ? Avons-nous donc des raisons de penser que la frontière de la procréation naturelle évolue ? C'est pourquoi ce mémoire a pour but d'initier des éléments de réponses à la question du devenir de l?AMP en France. À travers un rapide historique ainsi qu'un point sur la législation actuelle, ce mémoire aborde les différentes raisons d'un changement du cadre relatif à ces pratiques. Une enquête auprès du grand public ainsi que le recueil de l'avis de certains professionnels viennent alimenter le débat, et nous confirment beaucoup de choses? Qui vivra verra !